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See this forum thread: http://ubuntuforums.org/showthread.php?p=5040473
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I had been working in Hardy with several applications open. A family
member came along and switched to their user account for a little while.
When finished, they clicked switch user and left the computer at the GDM
login screen so I could log in and switch back to my session.
When I got back to the computer, the screen was a white-silverish color
and blank. It has a mouse cursor, but nothing else.
I used ctrl-alt-F1 to switch to a virtual console and with top I see
that all my processes are running. However, I cannot figure out how to
get my gnome desktop back. Alt-F7 just returns me to the blank white
screen.
I'm running compiz and nvidia restricted drivers. I do not want to use
ctrl-del-backspace or reboot because I was in the middle of unsaved work
when we switched users.
Solution:
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Quote:
Originally Posted by Nameless Neko
I've had this same trouble in the past day or so actually. If you move your
mouse around you'll find a spot where you can enter text. It's around the
center of the screen for me. If you enter your password there, it usually drops
you back into the Gnome desktop.
Not sure what's causing this bug to be honest, but this seems to work most of
the time for me. I have had to reboot once or twice because of this, though.
Edit: Don't think it's a compiz bug. I'm not running compiz on my installation
and I still get this bug when switching between the root account and my regular
account.
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Thank you!!! This was the solution. Since we had used the "user switching"
feature, I had to first type my username, then the password and like magic my
whole desktop appeared with all my running apps and data!
The only way to tell where to type is to watch the mouse point change
shape to an I-beam indicating it is in a text input field. The entire
screen is completely blank except for the mouse pointer.
This must be a bug in either the screen saver or the monitor power
saving features. However, I have no idea how to report this bug.
** Affects: gdm (Ubuntu)
Importance: Undecided
Status: New
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display error when using "switch user" feature
https://bugs.edge.launchpad.net/bugs/234824
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